Dead last in what?
From a glance, they had about a top 10 defense vs the run and a 25-27'ish vs the pass. They were top 5 for interceptions, 15th for sacks, and 1st for FF.
Dead last seems like an exaggeration outside of points allowed and pts/g which comes from late in games where teams are having to try to put up back to back touchdown drives just to get a FG to tie or win